Results 21 to 30 of about 7,064 (232)

Geometrical analysis of warp knit auxetic fabrics [PDF]

open access: yes, 2015
Despite considerable interests that have been shown on the formation, properties and characteristics of auxetic knit structures there remains a dearth of information about the fundamental geometrical analytics of warp knit auxetic fabrics.
Samuel, C Ugbolue   +2 more
core   +1 more source

Review of Mechanics and Applications of Auxetic Structures

open access: yesAdvances in Materials Science and Engineering, 2014
One of the important mechanical properties of materials is Poisson’s ratio, which is positive for most of the materials. However, certain materials exhibit “auxetic” properties; that is, they have a negative Poisson’s ratio.
Mariam Mir   +3 more
doaj   +1 more source

Onset of criticality in hyper-auxetic polymer networks

open access: yesNature Communications, 2022
Auxetic materials are characterized by a negative Poisson’s ratio - they become thicker when stretched. Here, authors reach the limit of auxetic behavior, known as hyper-auxetic, in polymer networks, hitting an unconventional mechanical critical point.
Andrea Ninarello   +2 more
doaj   +1 more source

Engineering Auxetic Cylinders and Intestine to Improve Longitudinal Intestinal Lengthening and Tailoring Procedure

open access: yesBioengineering, 2022
Auxetic materials can be exploited for coupling different types of tissues. Herein, we designed a material where the microorganism metabolic activity yields the formation of buckled/collapsed bubbles within gelling silicone cylinders thus providing ...
Luca Valentini   +8 more
doaj   +1 more source

Negative Poisson’s ratio polyethylene matrix and 0.5Ba(Zr0.2 Ti0.8) O3–0.5(Ba0.7 Ca0.3)TiO3 based piezocomposite for sensing and energy harvesting applications

open access: yesScientific Reports, 2022
Finite element studies were conducted on 0.5Ba(Zr0.2 Ti0.8) O3–0.5(Ba0.7 Ca0.3)TiO3 (BCZT) piezoelectric particles embedded in polyethylene matrix to create a piezocomposite having a positive and negative Poisson's ratio of −0.32 and 0.2.
Saptarshi Karmakar   +9 more
doaj   +1 more source

Core Spun Based Helical Auxetic Yarn: A Novel Structure for Wearable Protective Textiles

open access: yesJournal of Natural Fibers, 2022
Textile auxetic materials with negative Poisson’s ratio (NPR) have potential applications in protective textile, filtration, and energy absorbance. However, cotton core-spun based auxetic textile is rarely investigated.
Bushra Mushtaq   +9 more
doaj   +1 more source

Machine learning accelerated design of auxetic structures

open access: yesMaterials & Design, 2023
Auxetic metamaterials exhibit unusual expansion perpendicular to the direction of tensile loading, a behavior known as negative Poisson's ratio (NPR). The microstructures of auxetic metamaterials require rational design.
Menghuan Wang, Sheng Sun, Tong-Yi Zhang
doaj   +1 more source

Bistable auxetic surface structures

open access: yesACM Transactions on Graphics, 2021
We present Bistable Auxetic Surface Structures , a novel deployable material system based on optimized bistable auxetic cells. Such a structure can be flat-fabricated from elastic sheet material, then deployed towards a desired double-curved target shape by activating the bistable mechanism of its component cells. A
Tian Chen   +3 more
openaire   +1 more source

Development and Characterization of Re-Entrant Auxetic Fibrous Structures for Application in Ballistic Composites [PDF]

open access: yes, 2018
Auxetic fibrous structures and composites with negative Poisson’s ratio (NPR) have huge potential for application in ballistic protection due to their high energy absorption and excellent impact resistance.
Gonçalves, Clara   +11 more
core   +1 more source

Auxetic wrapped structures

open access: yes, 2021
Tato diplomová práce pojednává o auxetických textilních materiálech. Konkrétněji o auxetické přízi a vlastnostech podstatných pro její konstrukci. Jednou z těchto vlastností je tuhost jednotlivých komponentů příze.
Nováková, Tereza
core   +1 more source

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